Building a Patient-based Ontology for User-written Web Messages Marina Sokolova author David Schramm author 2011-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing 2011 Ruslan Mitkov editor Galia Angelova editor Association for Computational Linguistics Hissar, Bulgaria conference publication sokolova-schramm-2011-building https://aclanthology.org/R11-1111/ 2011-09 758 763